Seiko Cal. 7131 - 966

Released in 1966, the Cal. 7131 with design code 966 was part of Seiko's domestic market collection. With its 22mm lug width and 11.1mm profile, it sits comfortably on most wrists. [seikata-wm-a7d6ed84ee38]

Also known as: Tuna, Emperor

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

45mm

Case Thickness

11.1mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Green

Jewels

33j

Frequency

36,000 bph

Power Reserve

39 hours

Year

1966

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